package File;

import java.io.File;

public class MKDirDemo {
    public static void main(String[] args) {
        File dir=new File("./AAA/BBB/CCC");
        if (dir.exists()){
            System.out.println("yes");
        }else {
            dir.mkdirs();
            System.out.println("make");
        }

    }
}
